fabcf1a402
The 'releasenotes' gate job does not run our tox section. This allowed a releasenote to land that had a filename in an incorrect format because it was not created with 'reno new'. Move the running of 'tools/check-releasenotes.py' to the pep8 section and whitelist the releasenote that got merged. Change-Id: Id5bd8e0cbc9186c89f682224088a8f23998d59c3